I think a lot this has to do with a younger population never being around suits, or rarely. The old saying, "It's all Greek to me", applies. The history of clothing is interesting, and history is still being made. So many tailors of the past said, "Let it happen." SR is mostly for high end business men and bring in enough money to stay in business. Some other tailors have to include other garments to stay in business. And they have to know what those markets are about. If you don't know what the market is about, then how are you going to represent that market with the clothes you make for it? This subject of fads and non fads tailors need to very shrewd about. There are many questions to know and answers to those questions. Customers don't always know what they want or need, and why. All these questions sort out to the best long term answer. Rich young can buy the latest fashions every day or week. Somebody with less money, may be a few fads and the rest mediocre. Some people never fads. Some parts of fads become standard. There are many horse feathers about what clothing should and shouldn't be wore. Some tailors have two or three doors so one type of customer does not mix with the others. Rich business men in door one. Middle class use door two. The rich young in door three. Read that Henry Poole had three different shops for that very reason, and they were scattered around town to keep them even farther away from each other.